#include <iostream>
#include <string>
#include <fstream>
#include <vector>

// Simple CBP file parser
class SimpleCBParser {
public:
    static bool ParseCBPFile(const std::string& filename, std::string& projectName, std::vector<std::string>& sourceFiles) {
        std::ifstream file(filename);
        if (!file.is_open()) {
            return false;
        }
        
        std::string line;
        
        while (std::getline(file, line)) {
            // Find project title
            if (line.find("<Option title=") != std::string::npos) {
                size_t start = line.find('"');
                size_t end = line.find('"', start + 1);
                if (start != std::string::npos && end != std::string::npos) {
                    projectName = line.substr(start + 1, end - start - 1);
                }
            }
            
            // Find source files
            if (line.find("<Unit filename=") != std::string::npos) {
                size_t start = line.find('"');
                size_t end = line.find('"', start + 1);
                if (start != std::string::npos && end != std::string::npos) {
                    std::string filePath = line.substr(start + 1, end - start - 1);
                    if (filePath.find(".cpp") != std::string::npos || 
                        filePath.find(".c") != std::string::npos ||
                        filePath.find(".h") != std::string::npos) {
                        sourceFiles.push_back(filePath);
                    }
                }
            }
        }
        
        file.close();
        return !projectName.empty();
    }
};

// AI Model Manager
class AIModelManager {
private:
    std::string currentModel;
    std::string currentModelName;
    
public:
    AIModelManager() : currentModel("DSAI"), currentModelName("DS-V3.2exp0922") {}
    
    void SetModel(int model_id, const std::string& model_name = "") {
        switch(model_id) {
            case 0: 
                currentModel = "DSAI";
                currentModelName = model_name.empty() ? "DS-V3.2exp0922" : model_name;
                break;
            case 1:
                currentModel = "UEAI";
                currentModelName = model_name.empty() ? "UE-CodeExpert" : model_name;
                break;
            case 2:
                currentModel = "OPAI";
                currentModelName = model_name.empty() ? "GPT-4" : model_name;
                break;
            default:
                currentModel = "UNKNOWN";
                currentModelName = "Unknown";
        }
        std::cout << "AI Model set: " << currentModel << " - " << currentModelName << std::endl;
    }
    
    std::string GetStatus() const {
        return "AI Model: " + currentModel + " (" + currentModelName + ")";
    }
    
    std::string AnalyzeProject(const std::string& cbpFile) {
        std::string projectName;
        std::vector<std::string> sourceFiles;
        
        if (SimpleCBParser::ParseCBPFile(cbpFile, projectName, sourceFiles)) {
            std::string analysis = "AI Analysis Report:\n";
            analysis += "  Project: " + projectName + "\n";
            analysis += "  Files: " + std::to_string(sourceFiles.size()) + "\n";
            analysis += "  Model: " + currentModelName + "\n";
            
            if (!sourceFiles.empty()) {
                analysis += "  File List:\n";
                for (size_t i = 0; i < sourceFiles.size() && i < 8; ++i) {
                    analysis += "    - " + sourceFiles[i] + "\n";
                }
                if (sourceFiles.size() > 8) {
                    analysis += "    ... and " + std::to_string(sourceFiles.size() - 8) + " more files\n";
                }
            }
            
            // Add AI suggestions
            analysis += "\nAI Suggestions:\n";
            analysis += "  - Check build dependencies\n";
            analysis += "  - Optimize Makefile structure\n";
            analysis += "  - Verify cross-platform compatibility\n";
            
            return analysis;
        } else {
            return "Error: Cannot parse CBP file: " + cbpFile;
        }
    }
};

int main(int argc, char* argv[]) {
    AIModelManager aiManager;
    
    // AI Model Setting
    if (argc > 1 && std::string(argv[1]) == "--ai-set-model") {
        if (argc > 3) {
            int model_id = std::stoi(argv[2]);
            std::string model_name = argv[3];
            aiManager.SetModel(model_id, model_name);
        } else if (argc > 2) {
            int model_id = std::stoi(argv[2]);
            aiManager.SetModel(model_id);
        } else {
            std::cout << "Usage: --ai-set-model <model_id> [model_name]" << std::endl;
            std::cout << "Model IDs:" << std::endl;
            std::cout << "  0 - DeepSeek AI (default: DS-V3.2exp0922)" << std::endl;
            std::cout << "  1 - UE CodeExpert" << std::endl;
            std::cout << "  2 - GPT-4" << std::endl;
            std::cout << "Examples:" << std::endl;
            std::cout << "  --ai-set-model 0 DS-V3.2exp0922" << std::endl;
            std::cout << "  --ai-set-model 1 UE-CodeExpert" << std::endl;
            std::cout << "  --ai-set-model 2 GPT-4" << std::endl;
        }
        return 0;
    }
    
    // AI Mode - CBP File Analysis
    if (argc > 1 && std::string(argv[1]) == "--ai-mode") {
        if (argc > 2) {
            std::string cbpFile = argv[2];
            std::cout << aiManager.AnalyzeProject(cbpFile) << std::endl;
        } else {
            std::cout << "Usage: --ai-mode <cbp_file_path>" << std::endl;
            std::cout << "Example: --ai-mode project.cbp" << std::endl;
        }
        return 0;
    }
    
    // AI Status
    if (argc > 1 && std::string(argv[1]) == "--ai-status") {
        std::cout << aiManager.GetStatus() << std::endl;
        return 0;
    }
    
    // List Models
    if (argc > 1 && std::string(argv[1]) == "--ai-list-models") {
        std::cout << "Available AI Models:" << std::endl;
        std::cout << "  0: DeepSeek AI (DS-V3.2exp0922)" << std::endl;
        std::cout << "  1: UE CodeExpert" << std::endl;
        std::cout << "  2: GPT-4" << std::endl;
        return 0;
    }
    
    // Help Information
    if (argc > 1 && (std::string(argv[1]) == "--help" || std::string(argv[1]) == "-h")) {
        std::cout << "cbp2make_ai - AI Enhanced CBP to Makefile Converter" << std::endl;
        std::cout << "Version: 1.0 (AI Enhanced)" << std::endl;
        std::cout << std::endl;
        std::cout << "AI Features:" << std::endl;
        std::cout << "  --ai-set-model <id> [name]  Set AI model and version" << std::endl;
        std::cout << "  --ai-mode <file.cbp>       AI analysis of CBP project" << std::endl;
        std::cout << "  --ai-status                Show current AI model status" << std::endl;
        std::cout << "  --ai-list-models           List available AI models" << std::endl;
        std::cout << std::endl;
        std::cout << "Traditional Features:" << std::endl;
        std::cout << "  -in <file.cbp>             Input CBP file" << std::endl;
        std::cout << "  -out <makefile>            Output makefile" << std::endl;
        std::cout << "  --help, -h                 Show this help" << std::endl;
        std::cout << std::endl;
        std::cout << "Usage Examples:" << std::endl;
        std::cout << "  cbp2make_ai --ai-set-model 0 DS-V3.2exp0922" << std::endl;
        std::cout << "  cbp2make_ai --ai-mode myproject.cbp" << std::endl;
        std::cout << "  cbp2make_ai --ai-status" << std::endl;
        std::cout << "  cbp2make_ai --ai-list-models" << std::endl;
        return 0;
    }
    
    // Default behavior
    std::cout << "cbp2make_ai - AI Enhanced Version Ready!" << std::endl;
    std::cout << "Use --help to see all AI features" << std::endl;
    std::cout << "Current AI Model: " << aiManager.GetStatus() << std::endl;
    
    return 0;
}
